Topic:   Visible calibration update for month of April 2021

 

Date/Time Issued:  April 13, 2021 1550Z

 

Product(s) or Data Impacted:  All products from channels 1, 2, and 3a

 

Date/Time of Initial Impact:  April 13, 2021 12:00Z

 

Date/Time of Expected End:  Until Next Month's Coefficient Update

 

Length of Outage:   N/A

 

Details/Specifics of Change:

 

On 13 April 2021 at approximately 12:00 UTC, the following update of the calibration coefficients was implemented in the level 1B processing for NOAA-18, NOAA-19, MetOp-A/2, MetOp-B/1, and MetOp-C/3 for the month of April. These coefficients are intended to be optimal on April 27, in the middle of the two scheduled updates.

 

--------------------------------------------------------------------------------------

Metop-B/1

Ch_1_lo = 0.05723*count -  2.254, count<500.62

Ch_1_hi =  0.1696*count -  58.49, count>500.62

Ch_2_lo = 0.06431*count -  2.597, count<503.00

Ch_2_hi =  0.1894*count -  65.54, count>503.00

Ch_3_lo = 0.03287*count -  1.381, count<500.85

Ch_3_hi =  0.2289*count -  99.57, count>500.85

 --------------------------------------------------------------------------------------

Metop-A/2

Ch_1_lo = 0.05730*count -  2.317, count<501.01

Ch_1_hi =  0.1693*count -  58.44, count>501.01

Ch_2_lo = 0.07229*count -  2.873, count<500.42

Ch_2_hi =  0.2147*count -  74.14, count>500.42

Ch_3_lo = 0.03529*count -  1.450, count<501.94

Ch_3_hi =  0.2451*count - 106.76, count>501.94

--------------------------------------------------------------------------------------

Metop-C/3

Ch_1_lo = 0.05509*count -  2.224, count<498.68

Ch_1_hi =  0.1614*count -  55.25, count>498.68

Ch_2_lo = 0.06377*count -  2.612, count<500.01

Ch_2_hi =  0.1868*count -  64.14, count>500.01

Ch_3_lo = 0.03264*count -  1.324, count<498.72

Ch_3_hi =  0.2296*count -  99.57, count>498.72

--------------------------------------------------------------------------------------

NOAA-18 AVHRR

Ch_1_lo = 0.06174*count -  2.434, count<501.54

Ch_1_hi =  0.1841*count -  63.31, count>501.54

Ch_2_lo = 0.07514*count -  2.960, count<500.40

Ch_2_hi =  0.2254*count -  78.55, count>500.40

-------------------------------------------------------------------------------------

NOAA-19 AVHRR

Ch_1_lo = 0.05555*count -  2.159, count<496.43

Ch_1_hi =  0.1639*count -  56.33, count>496.43

Ch_2_lo = 0.06614*count -  2.565, count<500.37

Ch_2_hi =  0.1970*count -  68.01, count>500.37

--------------------------------------------------------------------------------------

 

The first 1b files produced with the updated CPIDS were:

NSS.HRPT.NN.D21103.S1407.E1421.B8193838.WI

NSS.GHRR.NN.D21103.S0834.E1029.B8193536.WI

 

NSS.HRPT.NP.D21103.S1304.E1318.B6277676.WI

NSS.GHRR.NP.D21103.S1110.E1303.B6277576.WI

 

For M3, M2 & M1 the first orbits processed will be the one running after orbit:

NSS.HRPT.M1.D21103.S0952.E0959.B4446464.GC

NSS.FRAC.M1.D21103.S1006.E1057.B4446464.MM

 

NSS.HRPT.M2.D21103.S0504.E0508.B7514848.MO

NSS.FRAC.M2.D21103.S0851.E1032.B7515051.SV

 

NSS.HRPT.M3.D21103.S0904.E0913.B1262121.GC

NSS.FRAC.M3.D21103.S0919.E1101.B1262122.SV

 

Contact Person(s) Name/Email/Phone Number for Questions:

Dejiang.Han Dejiang.Han@noaa.gov <mailto:Dejiang.Han@noaa.gov> 301-817-4119 operations support

Xiangqian Wu Xiangqian.Wu@noaa.gov <mailto:Xiangqian.Wu@noaa.gov> 301-683-3601 instrument scientist

 

Web site(s) that contain other relevant information (where applicable):

http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B notices

http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices

http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status

 

Contact Information for Further Information:  ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880

 

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